
   function glshow(){
		document.getElementById("ga").style.display="none";
		document.getElementById("gl").style.display="block";
		document.getElementById("gd").style.display="none";
	}
	function gashow()
	{
		 document.getElementById("ga").style.display="block";
		 document.getElementById("gl").style.display="none";
		 document.getElementById("gd").style.display="none";
	}
	function gdshow()
	{
		 document.getElementById("ga").style.display="none";
		 document.getElementById("gl").style.display="none";
		 document.getElementById("gd").style.display="block";
	}
	function pushow(){
		document.getElementById("li").style.display="none";
		document.getElementById("pu").style.display="block";
		document.getElementById("ch").style.display="none";
	}
	function lishow()
	{
		 document.getElementById("li").style.display="block";
		 document.getElementById("ch").style.display="none";
		 document.getElementById("pu").style.display="none";
	}
	function chshow()
	{
		 document.getElementById("li").style.display="none";
		 document.getElementById("pu").style.display="none";
		 document.getElementById("ch").style.display="block";
	}
	function pulshow(){
		document.getElementById("lit").style.display="none";
		document.getElementById("pul").style.display="block";
		document.getElementById("chk").style.display="none";
	}
	function litshow()
	{
		 document.getElementById("lit").style.display="block";
		 document.getElementById("chk").style.display="none";
		 document.getElementById("pul").style.display="none";
	}
	function chkshow()
	{
		 document.getElementById("lit").style.display="none";
		 document.getElementById("pul").style.display="none";
		 document.getElementById("chk").style.display="block";
	}
	function up()
	{
		 document.getElementById("loop").style.display="none";
		 document.getElementById("update").style.display="block";
	}